083730510A DCN8172
Teledyne API T500U CAPS NO
2
Analyzer with NumaView™ Software
71
HESSEN SETTINGS CONFIGURATION
Hessen configuration includes settings for alarms, version, response mode, status flags and
gas list. Locate the alarms in the Hessen Settings list (Setup>Comm>Hessen>Hessen
Settings) and edit as desired.
H
ESSEN
V
ARIATION
For the Hessen Variation setting, there are two versions.
•
TYPE 1 is the original implementation.
•
TYPE 2 has more flexibility when operating with instruments that can measure more
than one type of gas. For more specific information about the difference between the
two versions, download the
Manual Addendum for Hessen Protocol
from the
http://www.teledyne-api.com/manuals/
H
ESSEN
P
ROTOCOL
R
ESPONSE
M
ODE
Set the response mode under Hessen Response Mode, referring to Table 3-2 for
descriptions.
Table 3-2. Teledyne API's Hessen Protocol Response Modes
MODE ID
MODE DESCRIPTION
CMD
This is the default setting. Reponses from the instrument are encoded as the
traditional command format. Style and format of responses depend on exact
coding of the initiating command.
BCC
Responses from the instrument are always delimited with <STX> (at the
beginning of the response, <ETX> (at the end of the response followed by a 2
digit Block Check Code (checksum), regardless of the command encoding.
TEXT
Responses from the instrument are always delimited with <CR> at the beginning
and the end of the string, regardless of the command encoding.
H
ESSEN
S
TATUS
F
LAGS
Locate the various status flags in the Hessen Settings list and edit as needed. They are listed
by status flag name with their default bit assignments. (Those with unassigned flags are
listed as “0x0000”).
•
The status bits are included in the instrument’s responses to inform the host computer
of its condition. Each bit can be assigned to one operational and warning message
flag.
•
It is possible to assign more than one flag to the same Hessen status bit. This allows
the grouping of similar flags, such as all temperature warnings, under the same status
bit.
•
Assigning conflicting flags to the same bit will cause each status bit to be triggered if
any of the assigned flags is active.
Summary of Contents for T500U
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